40666446240 has 96 divisors (see below), whose sum is σ = 146399218560. Its totient is φ = 9295186944.

The previous prime is 40666446229. The next prime is 40666446241. The reversal of 40666446240 is 4264466604.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 40666446192 and 40666446201.

It is not an unprimeable number, because it can be changed into a prime (40666446241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6048195 + ... + 6054914.

It is an arithmetic number, because the mean of its divisors is an integer number (1524991860).

Almost surely, 2^40666446240 is an apocalyptic number.

40666446240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40666446240 is an abundant number, since it is smaller than the sum of its proper divisors (105732772320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40666446240 is a wasteful number, since it uses less digits than its factorization.

40666446240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12103134 (or 12103126 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 40666446240 in words is "forty billion, six hundred sixty-six million, four hundred forty-six thousand, two hundred forty".